Mazda MX-6 1998, Workshop Manual

Page: 692 / 1282

TROUBLESHOOTING [LA4A-EL]
STEP
INSPECTION ACTION
C2
CHECK ELECTRICAL SIGNAL OPERATION
Caution
• Removing the solenoid body connector by
prying with a screwdriver will damage the
connector. Remove the solenoid body
connector by pushing on the wire tab and
pulling on the wiring harness.
• Disconnect solenoid body connector.
• Using a mirror, inspect both ends of the
connector for damaged or pushed out pins,
corrosion, loose wires, and missing or
damaged seals.
• Refer to connector schematic and table of
solenoid body.
o - Solenoid Body Connector Component
• Connect volt-ohm meter (VOM)/digital volt-ohm
meter (DVOM) positive test lead to power
circuit and negative test lead to TCC solenoid
circuit of the solenoid body connector, (vehicle
harness side)
• VOM/DVOM on 20 Volt scale.
• W hile observing DVOM, cycle solenoid output
ON and OFF.
• Does the TCC solenoid output voltage change
at least 0.5 volt?
Yes Go to C5.
No Go to next step.
C3
CHECK CONTINUITY OF SOLENOID SIGNAL
AND POWER CIRCUIT HARNESS CIRCUITS
• Key off.
• Disconnect solenoid body connector.
• Disconnect PCM. Inspect for damaged or
pushed out pins, corrosion, loose wires, etc.
Service as required.
• Install breakout box, leave PCM disconnected.
• Refer to connector schematic and table of
solenoid body.
zr Solenoid Body Connector Component
• Measure resistance between PCM signal pin
54 at the breakout box and signal test pin at
solenoid body connector.
• Measure resistance between PCM test pin
71/97 at the breakout box and power circuit pin
at solenoid body connector.
• Is each resistance less than 5.0 ohms?
Yes Go to next step.
No Service open circuit(s).
Remove breakout box.
Reconnect all components.
Rerun OBD test.
C4
CHECK SOLENOID HARNESS FOR SHORTS
TO POWER AND GROUND
• Key off.
• Breakout box installed, PCM disconnected.
• Solenoid body connector disconnected.
• Refer to connector schematic and table of
solenoid body.
tr
Solenoid Body Connector Component
• Measure resistance between PCM signal test
pin 54 and test pin 71/97 at the breakout box.
• Measure resistance between PCM signal test
pin 54 and test pins 77/103 and 91 at breakout
box and chassis ground.
• Is each resistance greater than 10,000 ohms?
Yes Go to next step.
No Service short circuit.
Remove breakout box.
Reconnect all components.
Rerun OBD test.
0 5 -0 1 A -1 7